diff --git a/READMErb.md b/READMErb.md
index 6900a78e9..71d02e252 100644
--- a/READMErb.md
+++ b/READMErb.md
@@ -1,4 +1,4 @@
-# PyMuPDF 1.23.7
+# PyMuPDF 1.23.9rc1
 
 This wheel contains MuPDF shared libraries for use by PyMuPDF.